Top answers

A circular ice rink has a diameter of 60 meters. Calculate the area of the ice rink in terms of π in meters

Area of a cirlce = π x r^2 The radius (r) = the diameter / 2 So, r = 60/2 = 30 Therefore, the area of the ice rink = π x 30^2 = 900π
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Answered by Sophie K. • Maths tutor
6002 Views

An enzyme catalyses only one reaction. Explain why.

Enzyme has a specific active site. Only one substrate will fit the active site.
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Answered by Amy M. • Biology tutor
8129 Views

What are surds and why are they used?

Surds are irrational numbers that can't be represented accurately as a fraction or reccuring decimal, so they are left as a square root. For example: √ 3 . Calculate the square root of 3 using your calculato...
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Answered by Aisling O. • Maths tutor
37687 Views

What is the trend in ionization energy across period 3 in the periodic table?

Ionization energy generally increases across period 3 because the nuclear charge increases but the shielding of the outer electrons remains relatively the same. This means that the electrostatic force of att...
TA
Answered by Tamara A. • Chemistry tutor
134172 Views

When and how is the imperfect subjunctive used in Spanish?

The imperfect subjunctive is used frequently in Spanish in numerous different occasions such as hypothetical situations or after certain verbs that convey instruction or doubt. The imperfect subjunctive is u...
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Answered by Ben T. • Spanish tutor
2004 Views